Air conditioner



FIG. 1 is a bottom perspective view of an air conditioner, showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a side elevational view thereof, the opposite side being a mirror image of that shown. 

The ornamental design for an air conditioner, as shown and described. 